package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;

import com.sky.mapper.SetmeatelDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmeatelDishMapper setmeatelDishMapper;

    @Override
    public void add(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.save(dish);
        //  Long id = dish.getId();
        DishFlavor dishFlavor = new DishFlavor();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null) {
            for (DishFlavor flavor : flavors) {
                flavor.setDishId(dish.getId());
            }
            dishFlavorMapper.insertBatch(flavors);
        }


    }

    @Override
    public PageResult page(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);//后绪步骤实现
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    @Transactional//事务
    public void deleteByIds(List<Long> ids) {
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        List<Long> id = setmeatelDishMapper.getById(ids);
        System.out.println(id);
//        for (Long setmeatelid : setmeatelids) {
//            if (setmeatelid ==null){
//                throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
//            }
//            dishMapper.deleteById(setmeatelid);//后绪步骤实现
//            //删除菜品关联的口味数据
//            dishFlavorMapper.deleteByDishId(setmeatelid);//后绪步骤实现
//        }
        if (id != null && id.size() > 0) {
            //当前菜品被套餐关联了，不能删除
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除菜品表中的菜品数据
        for (Long id1 : ids) {
            dishMapper.deleteById(id1);//后绪步骤实现
            //删除菜品关联的口味数据
            dishFlavorMapper.deleteByDishId(id1);//后绪步骤实现
        }
    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish, dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.update(dish);
        List<DishFlavor> flavors = dishDTO.getFlavors();
        DishFlavor dishFlavor = new DishFlavor();
        // BeanUtils.copyProperties(flavors,dishFlavor);
        dishFlavorMapper.deleteByDishId(dish.getId());
        List<DishFlavor> flavors1 = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0) {
            for (DishFlavor flavor : flavors1) {
                flavor.setDishId(dishDTO.getId());
            }
            //向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavors);

        }
    }

    @Override
    public List<Dish> getlist(Long categoryId) {
        Dish dish=new Dish();
        dish.setCategoryId(categoryId);
       List<Dish>list=dishMapper.getlist(dish);
       return list;

    }

    @Override
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.getlist(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Dish dish = new Dish();
        dish.setId(id);
        dish.setStatus(status);
        dishMapper.updateStatus(dish);
    }
}
